<template>
  <div class="cmt-container">
      <h3>发表评论</h3>
      <hr>
      <textarea placeholder="请输入要输入的内容（最多不超过100字）" maxlength="100" v-model="msg"></textarea>
      <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>
      <div class="cmt-list">
          <div class="cmt-item" v-for="(item,i) in comments" :key="i">
              <div class="cmt-title">
                  第{{i+1}}楼&nbsp;&nbsp;用户：{{item.user_name}}&nbsp;&nbsp;发表时间：{{item.add_time|dateFormat}}
              </div>
              <div class="cmt-body">
                  {{item.content==='undefined'?'此人很懒，什么都没有留下':item.content}}
              </div>
          </div>
      </div>
      <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
  </div>
</template>

<script>
import {Toast} from "mint-ui";
export default {

  data () {
    return {
        comments:[],
        pageIndex:1,
        msg:''
    }
  },

  methods: {
      getComments(){
          this.$http.get("api/getcomments/"+this.id+"?pageindex="+this.pageIndex).then(result=>{
        //    console.log(result.body.message);
           
             if(result.body.status==0){
                  this.comments=this.comments.concat(result.body.message)
              }else{
                  Toast("获取评论失败");
              }
          })
      },
      getMore(){
          this.pageIndex++,
          this.getComments( )
      },
      postComment(){
          if(this.msg.trim().length===0){
              return Toast("评论内容不能为空");
          }
          this.$http.post('api/postcomment/'+this.$route.params.id,{content:this.msg.trim()})
          .then(function(result){
              if(result.body.status===0){
                  var cmt={
                      user_name:'匿名用户',
                      add_time:Date.now(),
                      content:this.msg.trim()
                  };
                  this.comments.unshift(cmt)
                  this.msg="";
              }
          })
      }
  },

  created () {
      this.getComments()
  },
  props:["id"]
}
</script>

<style lang='less' scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }

  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        line-height: 30px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>
